Question

Jika f(x) dibagi x+1 sisanya -3 dan jika dibagi x-1 sisanya 5. tentukan sisanya jika f(x) dibagi x²-1 (beserta caranya ya, babnya suku banyak)

Answer 1

(x+1) ==>f(-1) = -3
(x-1) ==>f(1) = 5

(x^2-1)=(x+1)(x-1)
f(x^2-1) = (-3)(5) = -15